High-temperature-resistant wave-absorbing coating material and preparation method thereof

A radar absorbing coating and high temperature resistance technology, applied in radiation absorbing coatings, fire retardant coatings, camouflage coatings, etc. Enhanced mechanical strength, good broadband absorption, high magnetic permeability

Active Publication Date: 2020-04-10
AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems or defects in the above-mentioned prior art, one of the purposes of the present invention is to propose a radar absorbing coating material that can withstand high temperatures, which has excellent mechanical properties and radar absorbing properties, and can solve the problem of current radar absorbing coating materials. The high temperature resistance of the wave-absorbing coating is not good, and the performance of the radar wave-absorbing coating material decreases or the function fails under high temperature conditions.

Method used

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  • High-temperature-resistant wave-absorbing coating material and preparation method thereof
  • High-temperature-resistant wave-absorbing coating material and preparation method thereof
  • High-temperature-resistant wave-absorbing coating material and preparation method thereof

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Embodiment 1

[0039]A kind of high-temperature-resistant radar wave-absorbing coating of the present embodiment comprises base material A component and auxiliary material B component, and described base material A component is made of 600g absorbent, 250g silicone resin, 15g xylene, 5g n-butanol , 15g butyl acetate, 15g propylene glycol methyl ether acetate, 30g diisobutyl phthalate, 8g polyester modified polydimethylsiloxane leveling agent, 4g organic bentonite anti-sedimentation agent, the auxiliary material B is 5g gamma-aminopropyltriethoxysilane; the absorbent is carbonyl iron powder with typical electromagnetic parameters; wherein: the real part of the complex dielectric constant of the carboxyl iron powder is 20 to 24, and the complex dielectric constant The imaginary part is 0.5-1.0, the real part of the complex permeability is 4.8-5.5, and the imaginary part of the complex permeability is 2.0-2.7.

[0040] The high temperature resistant radar wave-absorbing coating described in thi...

Embodiment 2

[0043] A kind of high-temperature-resistant radar wave-absorbing coating of the present embodiment comprises base material A component and auxiliary material B component, and described base material A component is made of 700g absorbent, 250g silicone resin, 40g xylene, 30g butyl acetate , 35g dioctyl phthalate, 8g polyester modified polydimethylsiloxane leveling agent, 4g fumed silica anti-settling agent, the auxiliary material B is 5g gamma-(methacryloxy) Propyltrimethoxysilane; the absorbent is carbonyl iron powder with typical electromagnetic parameters; wherein: the real part of the complex dielectric constant of the carboxyl iron powder is 20-24, and the imaginary part of the complex dielectric constant is 0.5-1.0 , the real part of the complex permeability is 4.8 to 5.5, and the imaginary part of the complex permeability is 2.0 to 2.7.

[0044] The high temperature resistant radar wave-absorbing coating described in this embodiment is prepared by the following method, a...

Embodiment 3

[0047] A kind of high-temperature-resistant radar wave-absorbing coating of the present embodiment comprises base material A component and auxiliary material B component, and described base material A component is made of 780g absorbent, 220g silicone resin, 40g n-butanol, 30g propylene glycol methyl Ether acetate, 35g diisodecyl phthalate, 8g polyacrylate copolymer leveling agent, 5g organic bentonite anti-sedimentation agent, the auxiliary material B is 4g gamma-mercaptopropyltrimethoxysilane; the absorption The agent is carbonyl iron powder with typical electromagnetic parameters; wherein: the real part of the complex permittivity of the carboxyl iron powder is 20-24, the imaginary part of the complex permittivity is 0.5-1.0, and the real part of the complex permeability is 4.8- 5.5, the imaginary part of the complex permeability is 2.0~2.7.

[0048] The high temperature resistant radar wave-absorbing coating described in this embodiment is prepared by the following method,...

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Abstract

The invention provides a high-temperature-resistant wave-absorbing coating material and a preparation method thereof, and relates to the field of radar wave-absorbing functional coating materials. According to the invention, the high-temperature-resistant wave-absorbing coating material is prepared from an organic silicon resin as a binder, a carbonyl iron powder absorbent subjected to ball milling treatment, a solvent, an auxiliary agent, a toughening agent and the like; during use, a silane coupling agent is added to perform auxiliary curing; and the wave-absorbing coating has good electromagnetic wave absorption performance, meets the requirements of small change of electromagnetic wave reflectivity after continuous tests for 100 hours at a high temperature of 200 DEG C, has good mechanical properties, can solve the problem of insufficient high-temperature resistance of the existing wave-absorbing coating material, and improves the environmental adaptability and the service life ofthe wave-absorbing coating material.

Description

technical field [0001] The invention belongs to the field of radar wave-absorbing coatings, and in particular relates to a functional coating capable of high temperature resistance and radar-absorbing effect used on aircraft and a preparation method thereof. Background technique [0002] With the development of aerospace equipment technology, the application technology of radar absorbing materials is becoming more and more important. Radar absorbing coating is the most widely used radar absorbing material. It has good absorbing effect and is easy to construct. For aircraft, the heat generated by friction with the air during high-speed flight will make the coating material withstand high temperature tests. Although ordinary wave-absorbing coating materials have good electromagnetic shielding and electromagnetic absorption effects, they are often difficult to withstand High temperature test. [0003] Radar is one of the main technical means of modern aerospace reconnaissance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/32C09D5/30C09D7/63
CPCC09D5/18C09D5/30C09D5/32C09D183/04C09D7/63C08K13/06C08K3/18C08K5/12C08K5/544C08K5/5425C08K5/548
Inventor 程文王浩继王建国尹生
Owner AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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